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Finding the Fourth Proportional to 436.83, 603.31 and 290.11

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Solution

The fourth proportional to 436.83, 603.31 and 290.11 is: 400.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.83 : 603.31 = 290.11 : x
  2. Step 2: Convert to fraction form
    436.83/603.31 = 290.11/x
  3. Step 3: Cross multiply
    436.83x = 603.31 × 290.11
  4. Step 4: Simplify right side
    436.83x = 175,026.26
  5. Step 5: Solve for x
    x = 175,026.26/436.83
  6. Step 6: Final answer
    x = 400.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.